20496473197 has 2 divisors, whose sum is σ = 20496473198. Its totient is φ = 20496473196.

The previous prime is 20496473119. The next prime is 20496473213. The reversal of 20496473197 is 79137469402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13422149316 + 7074323881 = 115854^2 + 84109^2 .

It is a cyclic number.

It is not a de Polignac number, because 20496473197 - 2¹⁹ = 20495948909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20496473797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10248236598 + 10248236599.

It is an arithmetic number, because the mean of its divisors is an integer number (10248236599).

Almost surely, 2^20496473197 is an apocalyptic number.

It is an amenable number.

20496473197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20496473197 is an equidigital number, since it uses as much as digits as its factorization.

20496473197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 20496473197 in words is "twenty billion, four hundred ninety-six million, four hundred seventy-three thousand, one hundred ninety-seven".